This directory (and version of CentOS) is depreciated. For normal users,
you should use /4/ and not /4.4/ in your path. Please see this FAQ
concerning the CentOS release scheme:
http://www.centos.org/modules/smartfaq/faq.php?faqid=34
If you know what you are doing, and absolutely want to remain at the 4.4
level, go to http://vault.centos.org/ for packages.